# iRobot Roomba Plus 405 Combo vs iRobot Roomba Plus 415 Combo + AutoWash Dock

As of Oct 31, 2026, the iRobot Roomba Plus 405 Combo costs $800 and the iRobot Roomba Plus 415 Combo + AutoWash Dock costs $600, so the iRobot Roomba Plus 415 Combo + AutoWash Dock is $200 cheaper. The iRobot Roomba Plus 415 Combo + AutoWash Dock has a published review score and ranks #34 in our robot vacuums ranking; the iRobot Roomba Plus 405 Combo is not scored yet. Pick the iRobot Roomba Plus 405 Combo for hard floor homes on a deep discount. Pick the iRobot Roomba Plus 415 Combo + AutoWash Dock for clear hard floors and low furniture.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/irobot-roomba-plus-405-combo-vs-irobot-roomba-plus-415-combo/

## Side by side

| | iRobot Roomba Plus 405 Combo | iRobot Roomba Plus 415 Combo + AutoWash Dock |
|---|---|---|
| Price | $800 | $600 |
| 3 year cost | $800 | $600 |
| Our score | Not scored yet | 6.2/10 |
| Rank in Floors | #66 | #34 |
| Status | on sale | on sale |
| Warranty | n/a | n/a |
| Suction | iRobot claims 70x the suction of Roomba 600 series, with 4 levels; Vacuum Wars measured 0.13 kPa against a 0.83 kPa average | 20,000 Pa (Ideal Home, Just A Dad Approved); iRobot's US page says 2.8X the Roomba Plus 405 Combo, while Ideal Home says 2.8 times the older Roomba 505 |
| Navigation | ClearView LiDAR, maps about 1,000 sq ft in 9 minutes and stores up to 4 maps (iRobot); Vacuum Wars measured 0.76 m2/min against a 0.70 average | ClearView LiDAR, up to 3 maps, about 9 min per 1,000 sq ft (iRobot); Ideal Home found the map accurate and systematic |
| Obstacle avoidance | No obstacle avoidance sensors (Vacuum Wars); BestReviews saw it tangle on cords twice in one run | LiDAR only, no camera; Ideal Home called it the weakest area, with tangles in charging cables and toys pushed aside |
| Mopping | DualClean spinning pads at 200 RPM with SmartScrub and auto lift on carpet (iRobot); Vacuum Wars scored 145 on dried stains against a 93 average but found it left 5.20 g of water against a 1.01 g average | Yes, two DualClean pads at 200 RPM with SmartScrub and 10 mm lift on rugs (iRobot); Ideal Home cleared a BBQ sauce spill in one pass |
| Self empty | Yes, bagged, up to 75 days based on one run per week (iRobot) | Yes, sealed bag that lasts up to 3 months (iRobot) |
| Dock features | AutoWash dock empties the bin, washes and dries the pads and runs a self cleaning water cycle (iRobot); Vacuum Wars notes no hot water wash or hot air drying | Empties, washes pads during mopping, heat dries them at 113°F, refills water and self cleans (iRobot); no detergent compartment per Ideal Home |
| Dustbin | 0.1 gal robot bin (Best Buy listing) | Not published; Just A Dad Approved says the bin fills quickly |
| Height | 4.2 in; robot is 14.1 x 13.8 x 4.2 in and 9.06 lb (iRobot) | 3.29 in (iRobot) |
| Pet hair | Vacuum Wars measured 50% flattened pet hair pickup on carpet against a 66% average and 17% hair wrap; BestReviews saw 90% to 95% faux fur pickup on hard floors but under 50% on carpet | Ideal Home and Just A Dad Approved both saw hair wrap the brush |
| App | Roomba Home app with routines, Clean Zones and Keep Out Zones; works with Alexa, Siri and Google Assistant (iRobot); Vacuum Wars and BestReviews called the app buggy or basic | Roomba Home app with schedules and zones; works with Alexa, Siri and Google Assistant (iRobot) |
| Noise | Dock emptying measured 87.8 dBA by Vacuum Wars and 80 to 85 dB by BestReviews | n/a |
| Weight | n/a | 6.44 lb robot (iRobot) |
| Best for | hard floor homes on a deep discount | clear hard floors and low furniture |
| Skip if | you have carpet, pets or cables on the floor | your floors have cables or pet toys |

## What reviewers found

### iRobot Roomba Plus 405 Combo

- Vacuum Wars (1.66 Vacuum Wars stars): Measured 0.13 kPa suction and 10 CFM airflow against 0.83 kPa and 16 CFM averages, 58% carpet deep clean against 75%, 50% flattened pet hair against 66%, and 5.20 g of water left behind. Dried stain score of 145 beat the 93 average. Called it a letdown. [Source](https://vacuumwars.com/roomba-plus-405-combo-review-great-hopes-ok-results)
- BestReviews: Tested in a 1,000 sq ft two level apartment. Picked up 90% to 95% of faux fur on hard floors but under 50% on carpet, spread spilled water, tangled on cords twice in one run, and the dock measured 80 to 85 dB when emptying. Testers did not recommend it. [Source](https://products.ktla.com/articles/home/vacuums/irobot-roomba-plus-405)

### iRobot Roomba Plus 415 Combo + AutoWash Dock

- Ideal Home: UK test: cleared a BBQ sauce spill in one pass and reached skirting boards, but tangled in charging cables, pushed toys and wrapped hair on the roller. Notes 45°C pad drying versus 75°C washes on some rivals. [Source](https://www.idealhome.co.uk/house-manual/floorcare/irobot-roomba-plus-415-combo-review)
- Just A Dad Approved (6.2/10): Three months of home use: hassle free 7/10, mop 6/10, carpet 6/10, hair tangle 5/10, clutter 7/10. Pads occasionally detached and it missed cords and small objects. [Source](https://justadadapproved.com/product/irobot-roomba-plus-415-robot-vacuum-and-mop-review/)

## Questions buyers ask

### Which is better, the iRobot Roomba Plus 405 Combo or the iRobot Roomba Plus 415 Combo + AutoWash Dock?

The iRobot Roomba Plus 415 Combo + AutoWash Dock has a published review score and ranks #34 in our robot vacuums ranking; the iRobot Roomba Plus 405 Combo is not scored yet. Pick the iRobot Roomba Plus 405 Combo for hard floor homes on a deep discount. Pick the iRobot Roomba Plus 415 Combo + AutoWash Dock for clear hard floors and low furniture.

### Which is cheaper?

The iRobot Roomba Plus 415 Combo + AutoWash Dock at $600, versus $800 for the iRobot Roomba Plus 405 Combo, checked Oct 31, 2026. Over 3 years with running costs: $800 vs $600.

### What is the difference between the Roomba Plus 405 Combo and the Roomba Plus 415 Combo + AutoWash Dock?

Suction: iRobot claims 70x the suction of Roomba 600 series, with 4 levels; Vacuum Wars measured… on the Roomba Plus 405 Combo, 20,000 Pa (Ideal Home, Just A Dad Approved); iRobot's US page says 2.8X the Roomba Plus… on the Roomba Plus 415 Combo + AutoWash Dock. Navigation: ClearView LiDAR, maps about 1,000 sq ft in 9 minutes and stores up to 4 maps (iRobot)… on the Roomba Plus 405 Combo, ClearView LiDAR, up to 3 maps, about 9 min per 1,000 sq ft (iRobot); Ideal Home found… on the Roomba Plus 415 Combo + AutoWash Dock. Obstacle avoidance: No obstacle avoidance sensors (Vacuum Wars); BestReviews saw it tangle on cords twice in… on the Roomba Plus 405 Combo, LiDAR only, no camera; Ideal Home called it the weakest area, with tangles in charging… on the Roomba Plus 415 Combo + AutoWash Dock.

Full reviews: [iRobot Roomba Plus 405 Combo](https://robotsforthat.com/robot/irobot-roomba-plus-405-combo/index.md), [iRobot Roomba Plus 415 Combo + AutoWash Dock](https://robotsforthat.com/robot/irobot-roomba-plus-415-combo/index.md)